I'm sorry if this has already been brought up but I haven't found it in issues or docs: can preprocessor directives like #define be handled? It looks like they can't. I'm not too familiar with libclang so this may well be something obvious.

Aside from dealing with compile time flags, most of the C libraries use #define to set constants, as in #define X (1), #define Y ((float)-X), which easily transforms to immutable. For a large percentage of headers, just handling constants would be sufficient to get them working.

However, C-defines can get ugly, weird and unpredictable and sure there's no way to handle all of them... though some can be parsed into immutable constants, some into functions #define f(a, b) ((a) + (b)).

Are there any plans regarding this?

Thanks.